Commack Family Dental
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Dr. Klein and his staff are devoted to treating their patients with the best quality of care. He is experienced in all phases of cosmetic, implant, and restorative dentistry including root canal treatment. His goal is to provide each patient with the best treatment, all under one roof. The office is high tech with all the newest equipment and cutting edge technology.

He attends monthly continuing education lectures and has trained extensively in CEREC single visit crowns and onlays as well as Invisalign. He has trained with sleep apnea specialists in the fabrication of oral sleep appliances as a replacement to the CPAP machine.
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Dr. Lauren A. Greco graduated from Stony Brook University in 2008 with a bachelor's degree in Biology. Dr. Greco earned her Doctorate of Dental Medicine at Boston University, where she graduated magna cum laude & received recognition for her contributions to global health through international volunteer service, as well as several awards.
Kelly Janketic is our registered dental hygienist. She has been with our practice for over 15 years. Kelly attended New York City Technical College of Brooklyn where she received her Associates Degree in Dental Hygiene. She also completed a residency at St. Albans Hospital in Queens and Downstate Hospital in Brooklyn.
As former dental assistant, Ellen fell in love with the dental field and went on to pursue further training in Dental Hygiene. Ellen graduated from Farmingdale State College Dental Hygiene program. Graduating at the top of her class, she was the recipient of the Hu-Friedy Golden Scaler Award for her exceptional clinical abilities as well as the New York State Dental Association Albert H. Stevenson Award.
Commack Family Dental is dedicated to providing you with the highest quality, cost effective medical care. We accept all major credit cards and offer payment installments. Commack Family Dental is an in-network provider for many major dental insurance companies. A co-payment may apply at each visit and will be collected from the patient at the time of service.
Endodontic therapy or Root Canal therapy is a sequence of treatment for the infected pulp of a tooth. Infection of the pulp can be caused by many things, such as trauma to the tooth, deep decay, cracks and chips, or repeated dental procedures. After the tooth is numb, the Dentist places a small protective sheet called a "dental dam" over the area to isolate the tooth and keep it clean and free of saliva during the procedure.
Reviews (7)
Cindy Smith
Cindy Smith
Jan 03, 2022
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Always excellent care from Dr. Klein and what a great staff so pleasant always making you feel comfortable… best dentist I’ve had!!!
Christine Marino
Christine Marino
Oct 31, 2021
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Dr. Klein is a wonderful dentist who does excellent work. Kelly is a great hygienist as well! I am someone who had a bit of dentist fear in the past, and now have no trepidation about my visits. Would highly recommend this office!
Maria
Maria
Sep 22, 2021
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I went to Commack Family Dental for a second opinion- I was in excruciating pain and had been for the past week. Dr. Klein and his staff were kind and compassionate and he immediately pointed me in the right direction the same day. Turned out I had a fractured tooth that was not showing up on any x rays. The issue was addressed later that afternoon and I am feeling much better than I was. I am so grateful. Going forward, I plan on switching my family to CFD. Thank you Dr. Klein and staff!
Robert Smith
Robert Smith
Jul 26, 2021
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Went for my regular cleaning and was in and out quickly and painlessly. Kelly is amazing. Highly recommend!
Joanne Randazzo
Joanne Randazzo
Jul 22, 2021
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Very professional atmosphere front desk was excellent and attentive. Staff was friendly and understanding. My hygienist was friendly and professional. I would definitely recommend this office for all work done.
Carol Fantauzzi
Carol Fantauzzi
Jun 27, 2021
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Great office . Have been using this practice for many years.
Dr Klein is wonderful .Kelly, Cindy , Nadine , as well as all the other staff, are always very friendly and go out of their way to be helpful. Office is very clean, and all safety protocols are followed .
Have recommended this office to lots of family and friends.
Rachel Wrubel
Rachel Wrubel
Jun 02, 2021
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I was so hesitant to go to the dentist during COVID, but it was amazing! I felt safe and taken care of. Kelly was amazing and Dr Klein had so much patience with me.